Numerical study on the thermal and flow characteristics of periodically formed inner wavy structures in a cooling channel

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• 作者：Ju-Chul Lee ; Sang-Hu Park ; Changmin Son…
• 关键词：Cooling channel ; Heat transfer enhancement ; Energy efficiency ; Computational fluid dynamics (CFD) ; Taguchi method
• 刊名：Journal of Mechanical Science and Technology
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：29
• 期：9
• 页码：3911-3917
• 全文大小：1,608 KB
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• 作者单位：Ju-Chul Lee (1)
  Sang-Hu Park (2)
  Changmin Son (2)
  June Kee Min (3)
  Man Yeong Ha (2)
  Jong-Rae Cho (4)
  
  1. Graduate School of Mechanical Engineering, Pusan National University, Geumjeong-gu, Busan, 609-735, Korea
  2. School of Mechanical Engineering, Pusan National University, Geumjeong-gu, Busan, 609-735, Korea
  3. PNU and Rolls-Royce UTC, Pusan National University, Geumjeong-gu, Busan, 609-735, Korea
  4. Division of Mechanical & Energy Systems Engineering, Korea Maritime University, Yeongdo-gu, Busan, 606-791, Korea
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Structural Mechanics
  Control Engineering
  Industrial and Production Engineering
  
• 出版者：The Korean Society of Mechanical Engineers
• ISSN：1976-3824

文摘

In industrial fields of machine and aerospace, cooling systems consisting of channels are widely used to increase energy efficiency and prevent system overheat. In cooling channels, a reduced pressure drop, an enhanced heat transfer, and a short channel length are considered key design requirements for optimizing the total volume and weight of a system. In this work, we improved heat transfer efficiency by using milli-scale wavy structures inside the channel. By optimizing the inner structures through computational fluid dynamics analysis and Taguchi method, the Nusselt number increased by approximately 11.7% with a similar pressure drop compared with that of a normal channel for a Reynolds number of 1000. Keywords Cooling channel Heat transfer enhancement Energy efficiency Computational fluid dynamics (CFD) Taguchi method